POLICY-COND provides tools to insert and execute code based on a compiler's OPTIMIZE policy. It also contains a contract-like notion of expectations, which allow dynamic checking or inclusion of various things that should happen depending on compiler policy.

MARRAY is a library which provides access to memory-mapped files through Common Lisp arrays.

CL-PUNCH is a Scala-like anonymous lambda literal.

A utility for running external programs, built on UIOP. Cmd is designed to be natural to use, protect against shell interpolation and be usable from multi-threaded programs.

This package provides a robust CSV parser and printer that tries to follow the fine print of de facto standards. It can be configured to choose which standard exactly.

EXTERNAL-PROGRAM enables running programs outside the Lisp process. It is an attempt to make the RUN-PROGRAM functionality in implementations like SBCL and CCL as portable as possible without sacrificing much in the way of power.

This is a Common Lisp library providing a set of macros for generating lexical analyzers automatically. The lexers generated using cl-lex can be used with cl-yacc.

Optima is a fast pattern matching library which uses optimizing techniques widely used in the functional programming world.

cl-transmission is a library to interface with the Transmission torrent client using its RPC (remote procedure call).

This package provides GNU gettext completely implemented in Common Lisp without any C library bindings.

This package contains an implementation of RFC 2388, which is used to process form data posted with HTTP POST method using enctype "multipart/form-data".

YASON is a Common Lisp library for encoding and decoding data in the JSON interchange format.

The GTWIWTG library (Generators The Way I Want Them Generated -- technically not generators, but iterators) is meant to be small, explorable, and understandable.

This is a small library providing the ISO-639 language code to language name mapping.

This package provides CFFI bindings to the libflac audio library for Common Lisp.

This package provides Common Lisp system collecting tools written to wrangle OpenGL Shader Language (GLSL) source files.

wild-package-inferred-system is an extension of ASDF package-inferred-system that interprets star * and globstar ** in package or system names.

This library implements the base58 encoding algorithm. It's basically base64 but with a smaller alphabet (58, as in the name) that doesn't include similar looking characters, among other things. See https://github.com/bitcoin/bitcoin/blob/master/src/base58.h for a full reference.

This library features a rectangle packer for sprite and texture atlases.

This package provides Common Lisp bindings to access the linear algebra libraries using the CBLAS API. Currently the OpenBLAS implementation is used.

fast-websocket is an optimized low-level WebSocket protocol parser/composer.

The cl-data-lens library provides a language for expressing data manipulations as the composition of more primitive operations.

CXML does an excellent job at parsing XML elements, but what do you do when you have a XML file that's larger than you want to fit in memory, and you want to extract some information from it? Writing code to deal with SAX events, or even using Klacks, quickly becomes tedious. cl-xmlspam (for XML Stream PAttern Matcher) is designed to make it easy to write code that mirrors the structure of the XML that it's parsing. It also makes it easy to shift paradigms when necessary - the usual Lisp control constructs can be used interchangeably with pattern matching, and the full power of CXML is available when necessary.

bubble-operator-upwards is a function that bubbles an operator upwards in a form, demultiplexing all alternative branches by way of cartesian product.